Gaia DR2 distances to Collinder 419 and NGC 2264 and new astrometric orbits for HD 193 322 Aa,Ab and 15 Mon Aa,Ab

  title={Gaia DR2 distances to Collinder 419 and NGC 2264 and new astrometric orbits for HD 193 322 Aa,Ab and 15 Mon Aa,Ab},
  author={Jes{\'u}s Ma{\'i}z Apell{\'a}niz},
  journal={Astronomy \& Astrophysics},
Context. On the one hand, the second data release of the Gaia mission (Gaia DR2) has opened a trove of astrometric and photometric data for Galactic clusters within a few kiloparsecs of the Sun. On the other hand, lucky imaging has been an operational technique to measure the relative positions of visual binary systems for a decade and a half. This time is sufficient to apply the results of the technique to the calculation of orbits of some massive multiple systems within ∼1 kpc of the Sun… 
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2018a, A&A, 616
  • 2018
inclination with respect to the plane of the sky. – Ω: position angle of the ascending node. – ω: longitude of the periastron in the direction of motion
  • Traditionally (e.g. Tokovinin
  • 1992
Apellániz: Distances to Collinder 419 and NGC 2264 and orbits for HD 193 322 Aa,Ab and 15 Mon Aa,Ab Table 2. Properties of Collinder 419 and NGC 2264 from Cantat-Gaudin et al
  • 2018
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